255944671 has 2 divisors, whose sum is σ = 255944672. Its totient is φ = 255944670.

The previous prime is 255944669. The next prime is 255944683. The reversal of 255944671 is 176449552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255944671 - 2¹ = 255944669 is a prime.

It is a super-2 number, since 2×255944671² = 131015349226596482, which contains 22 as substring.

Together with 255944669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255944641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127972335 + 127972336.

It is an arithmetic number, because the mean of its divisors is an integer number (127972336).

Almost surely, 2^255944671 is an apocalyptic number.

255944671 is a deficient number, since it is larger than the sum of its proper divisors (1).

255944671 is an equidigital number, since it uses as much as digits as its factorization.

255944671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 255944671 is about 15998.2708753165. The cubic root of 255944671 is about 634.9146730576.

The spelling of 255944671 in words is "two hundred fifty-five million, nine hundred forty-four thousand, six hundred seventy-one".